/*
 * #%L
 * sfdc-wsc-tools
 * %%
 * Copyright (C) 2013 salesforce.com, inc.
 * %%
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *    following disclaimer.
 * 
 * 2) Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
 *    the following disclaimer in the documentation and/or other materials provided with the distribution.
 * 
 * 3) Neither the name of salesforce.com, inc. nor the names of its contributors may be used to endorse or
 *    promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */
package com.sforce.ws.codegen;

import java.io.File;

import java.io.FileInputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;

import junit.framework.Assert;

public class CodeGeneratorTestUtil {
    private static final String NL = System.getProperty("line.separator");
    
    public static String getSourceAsStr(final File src) throws IOException {
        FileInputStream stream = new FileInputStream(src);
        try {
          FileChannel fc = stream.getChannel();
          MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
          /* Instead of using default, pass in a decoder. */
          return Charset.defaultCharset().decode(bb).toString();
        }
        finally {
          stream.close();
        }
    }

    public static File getFileFromResource(final String resource) throws URISyntaxException {
            File file;
            try {
                file = new File(CodeGeneratorTestUtil.class.getClassLoader().getResource(resource).toURI());
            } catch (URISyntaxException x) {
                throw x;
            }
            return file;
    }
    
    public static String getNewLine() {
        return NL;
    }

    public static String fileToString(final String fileName) {
        String str = null;
        
        try {
            File src = new File(CodeGeneratorTestUtil.getFileFromResource("codegeneration"), fileName);
            str = CodeGeneratorTestUtil.getSourceAsStr(src);
        }
        catch (Exception x) {
            Assert.fail("Failed to load source file = " + fileName + " because " + x.getMessage());
        }
        
        return str;
    }
}
